A device and a method for welding a welding stud to a substrate are disclosed. A welding current is applied to a welding stud between the welding stud and the substrate, whereby a material of the welding stud and the substrate is partially liquefied. The welding stud is then immersed into the solidifying material of the welding stud or the substrate in order to create a bond between the welding stud and the substrate.

A welding gun for welding a welding stud to a substrate in a welding direction is provided, comprising a holding device for holding the welding stud during a welding operation, wherein the welding stud has a contact surface which is intended to contact the substrate before and/or during the welding operation, further comprising a stud lifting device for conveying the holding device against the welding direction to an immersing start position, further comprising a stud immersing device for conveying the holding device from the immersing start position in the welding direction, further comprising a bearing element having a bearing surface for supporting the welding gun on the substrate, and further comprising a device for automatically adapting the immersing start position relative to the bearing surface in the welding direction.

A portable stud welder apparatus is provided for welding a stud onto a work piece. The portable stud welder apparatus includes a housing and an energy storage device. A weld stud gun that is configured to hold a weld stud is electrically connected to the energy storage device for receiving energy from the energy storage device to pass a current through the stud and the work piece to form a weldment. At least one battery of the lithium ion type that is removeably coupled to the housing to establish an electrical connection with said energy storage device and provide energy to the energy storage device.

A control unit and method for a joining system having at least one joining station, which is designed to join at least one first joining element to a workpiece, determines actual data with respect to a first joining element joined to a current workpiece by the joining station. The control unit and method determine, in accordance with the actual data, a subsequent control instruction for the joining station for joining a first joining element to a subsequent workpiece.

Disclosed is an apparatus for welding a weld stud to a substrate, comprising a welding gun which includes a casing and a stud holder for the weld stud, further comprising a gas container and a gas line for conducting gas from the gas container to the stud holder, the gas container being supported by the welding gun.

A portable stud welder apparatus is provided for welding a stud onto a work piece. The portable stud welder apparatus includes a housing and an energy storage device. A weld stud gun that is configured to hold a weld stud is electrically connected to the energy storage device for receiving energy from the energy storage device to pass a current through the stud and the work piece to form a weldment. At least one battery of the lithium ion type is removeably coupled to the housing to establish an electrical connection with said energy storage device and provide energy to the energy storage device.

A device and method for welding a welding stud to a base material are provided. A welding current is applied to a welding stud between the welding stud and the base material, wherein a material of the welding stud and the base material is partially liquefied. The welding stud is then immersed into the solidifying material of the welding stud or the base material in order to create a bond between the welding stud and the base material.

A shear stud feeder for a stud welding gun may include a support frame having a first slide rail and a second slide rail longitudinally spaced apart from the first slide rail to form a slot therebetween. The shear stud feeder may also include a magazine removably engaged with the support frame. The magazine may be adapted to support a plurality of shear studs by the head of each shear stud in a manner in which the body of each shear stud hangs below a bottom of the magazine and wherein the magazine is adapted to dispense the plurality of shear studs to the slot. The shear stud feeder may include a feed mechanism disposed adjacent to either the first slide rail or the second slide rail and a gate assembly adjacent to a front end of each of the first slide rail and the second slide rail.

A device and method for welding a welding stud to a base is provided. A welding current is applied to a welding stud between the welding stud and the base material, wherein a material of the welding stud and the base material is partially liquefied. The welding stud is then immersed into the solidifying material of the welding stud or the base material in order to create a bond between the welding stud and the base material.

A loading pin, for a joining device, having a first axial end portion connectable to an axial drive, and having a second axial end portion which is realized for the purpose of exerting an axial force onto a joining element in order to push the joining element into a holding device and/or in order to support the joining element axially during a joining process, wherein the loading pin comprises an axial hollow channel portion through which a joining element is guidable in an axial feed direction. The loading pin partially defines a lateral joining element feed opening, via which a joining element is feedable into the hollow channel portion.